How do I manually install .NET 3.5 on Windows 10?

By Timothy Tibbetts

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Windows 10 continues to update the Microsoft .NET Framework, but if you are running apps that were developed for Windows XP, 7, or Vista, you might need the older Microsoft .NET Framework 3.5. Here's how to install 3.5 quickly and easily offline using your Windows DVD or ISO.

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If you're online and don't mind waiting for the download, see How to Install .NET Framework 3.5 on Windows 10, Windows 8.1, and Windows 8.

You'll need your Windows 10 DVD or ISO. or download and extract the latest Windows 10 ISO to its own folders using the Windows 10 Media Creation Tool.

Take note of what drive your DVD is in or where you extracted the ISO. For simplicity, we put our ISO in a C:\Win10 folder to make things easier.

Open a Command Prompt or PowerShell as admin and type in:

Dism /online /enable-feature /featurename:NetFX3 /All /Source:D:\sources\sxs /LimitAccess

Replace the D with the drive containing the ISO. If you extracted the ISO to a folder using our example above, then replace the D:\ with C:\Win10

You will see Enabling features and a progress bar. When complete you should see The operation completed successfully.

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If you'd prefer to make it even easier, there's a batch file available that you can extract, right-click run as admin and it will find your ISO and install.Net 3.5

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Troubleshooting Microsoft .NET Framework Installations and Uninstallations

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When installing softwares like E-prime or BrainVision Analyzer, we are required to install .NET Framework 3.5 component. Although the process is straightforward and sometimes we already have the component previously installed, it is possible that the installation causes an error (error code 0x800F081F), specially if your laboratory computer uses Windows 10. Here we show you how to solve this issue.

First, you can check if the component is already installed on your device. Go to Control Panel > Programs > Turn Windows features on or off, verify if .NET Framework 3.5 checkbox is selected and then proceed with the software installation.

If the error persits, we will have to force the installation with the Windows command prompt (CMD). Prior to this step, we need to have the .NET Framework installation package in our device, which you can typically find on the 'Components' folder of the software we are trying to install (if you can't find in, it is also available for direct download on the Microsoft's website). For now, you can leave the installation package on your local disk folder (C:\).

Go to Start Menu and type 'cmd' and open it with administrator privileges. Copy the following command on the prompt and execute it:

Dism.exe /online /enable-feature /featurename:NetFX3 /source:C:\ /LimitAccess

The prompt will display the installation progress. Once it finishes, run the software setup again and that's it.

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• Do you have problems installing .NET Framework 3.5 or turning this feature on?
• It is a crucial part of many Windows apps, so learn how to do that from our guide below.
• Dive deep into the best solutions created by our experts to resolve this issue once and for all.

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The .NET Framework 3.5 is an essential feature for running many Windows applications, but some users reported that it isn’t turned on in Windows 10 or is missing.

The .NET Framework is a crucial part of many applications running on Windows platforms. This feature provides the necessary functionality for these apps to run normally.

Logically, before installing these apps, we need to enable .NET Framework on our computer.

Dot NET Framework 3.5 is an essential component of Windows, and if the Dot NET Framework is missing, you might experience specific issues.

Speaking of .NET Framework, users reported the following problems:

• Microsoft Dot NET Framework 3.5 offline installer – To install Dot NET Framework 3.5, you need an active Internet connection, but you can also install this framework using the offline installer.
• NET Framework 3.5 error 0x800f0906, 0x800f0922, 0x800f081f – Sometimes you might not be able to install .NET Framework due to various errors. We already covered common .NET Framework 3.5 errors in one of our older articles, so check it out.
• Dot NET Framework 3.5 The following feature couldn’t be installed, The source files could not be found – Sometimes, you won’t be able to install .NET Framework due to these messages. However, you might be able to solve that problem by using one of our solutions.
• .NET Framework 3.5 unable to install – In some cases, you might not be able to install NET Framework at all. Your settings or corrupted files likely cause this, but you can quickly fix that.

What can I do if .NET Framework 3.5 is missing on Windows 10?

1. Install .NET Framework 3.5 as a Windows feature

1. Press the Windows + R to open the Run command. Type appwiz.cpl and then press Enter.
   
   
2. In the Programs and Features window, click on the link Turn Windows features on or off.
   
   
   
3. Check if the .NET Framework 3.5 (includes .NET 2.0 and 3.0) option is available in it. If yes, then enable it and then click on OK.
   
   
   
4. Follow the on-screen instructions, complete the installation and restart the computer if the process requests that from you.

After that, the .NET Framework should start working again without any problems.

You can also get .NET Framework 3.5 from Microsoft.

2. Install .NET Framework 3.5 on-demand

Besides installing .NET Framework 3.5 through the Control Panel, you can also install it on-demand.

If a particular app requires the .NET Framework 3.5, but this feature isn’t enabled on your computer, the installation wizard will display the prompt for installing .NET Framework 3.5 on demand.

To install .NET Framework 3.5, choose the Install this feature option in the prompt, and .NET Framework 3.5 will be automatically installed on your computer.

3. Use the DISM command to install .NET Framework 3.5

1. Press Windows + R to open the Run command, type cmd in the text field, and click OK.
   
2. Paste the following command and hit Enter to execute it: DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:X:sourcessxs
   

To run this command, you’ll need to replace X with the letter representing the drive with installation media.

After running this command, you should be able to install .NET Framework 3.5 on your PC without any problems.

Remember that you might get a message saying you need administrative privileges to run this command. You must start Command Prompt as administrator and rerun this command if that happens.

Some users have reported that they get a specific error message after they try to install .NET Framework 3.5 through the Control Panel or on-demand.

To avoid this error, try to install .NET Framework 3.5 with the Command Prompt. Before you can do that, you might need a Windows 10 installation media.

4. Install the missing updates and try again

1. Press Windows + I to open the Settings app and navigate to the Update & Security section.
2. Next, click on Check for updates button.
3. Windows 10 will now check for available updates and download them in the background.

After downloading and installing the latest updates, you should try to install .NET Framework 3.5 again.

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If .NET Framework 3.5 is missing in Windows 10 and you can’t install it, you might be able to fix the problem by downloading the latest Windows Updates.

Sometimes bugs can prevent specific components from installing, but you should be able to fix them by updating Windows 10.

If you’re having trouble opening Settings, the solutions are quite simple.

Read more about this topic

• Faulty Hardware Corrupted Page Error: 4 Methods to Fix It
• Mfc110u.dll Missing: Use These 3 Solutions to Fix It

5. Perform an SFC scan to fix .NET Framework 3.5 missing

1. Press Windows + X to open the Power User menu and choose Command Prompt (Admin) or PowerShell (Admin) from the list of options.
   
2. When Command Prompt starts, enter the following command and hit Enter: sfc /scannow
   
3. Remember that an SFC scan can take about 15 minutes to finish, so don’t interrupt it.

Once the SFC scan is finished, try to install .NET Framework 3.5 again. You might also have to perform a DISM scan if it doesn’t work.

6. Perform a DISM scan

1. Type Command Prompt in the Search bar, and click on Run as administrator.
2. Now paste the following command and hit Enter: DISM /Online /Cleanup-Image /RestoreHealth
   
3. DISM scan will now start. The scan can take more than 15 minutes to complete, so be sure not to interrupt it.

Once you complete the DISM scan, try to install .NET Framework 3.5 again. Users reported that the DISM scan worked for them, but if you still can’t install .NET Framework, repeat the SFC scan and check if that solves the problem.

7. Use the lodctr command

1. Press Windows + R to open Run, type cmd, and then hit Ctrl + Shift + Enter.
2. Now, enter the following command and hit Enter: lodctr /r

After the command is executed, the problem should be fixed, and you’ll be able to install .NET Framework 3.5 without any issues.

Many users reported that this solution worked for them, so if you have any problems installing .NET Framework, be sure to try this solution.

8. Change your Group Policy

1. Press Windows + R, and enter gpedit.msc in the text field. Now press Enter or click OK. Keep in mind that this tool is available only on Pro versions of Windows 10, but there’s a way to run Group Policy Editor on Windows Home edition.
   
2. When Group Policy Editor starts, navigate through Computer Configuration> Administrative Templates >System in the left pane. Then, in the right pane, double-click on Specify settings for optional component installation and component repair.
   
3. Next, select Enabled and click on Apply and OK.
   
4. Optional: Check Download repair content and optional features directly from Windows Update instead of Windows Server Update Services.
5. After making these changes, you need to start Command Prompt as administrator and run the following command to apply the changes: gpupdate /force

Once done, you should be able to install the .NET Framework without issues.

9. Check your Action Center

1. Press Window + S, type Control Panel in the Search bar and click on the relevant search result.
   
2. Here, make sure that Category is selected in View by dropdown menu. Now navigate to System and Security section.
   
3. Now click on Review your computer’s status and resolve issues under Security and Maintenance.
4. If you see any warnings, be sure to resolve them.

Once all issues are resolved, try to install .NET Framework once again.

If you still experience issues with .NET Framework on Windows 10, these should be easy to fix, given you follow a systematic and informed approach.

An app on your PC needs the following feature: .NET Framework 3.5

This error occurs whenever your PC can not identify your .NET Framework’s update and install it.

Fortunately, Windows has a built-in tool that allows you to check, download, and install the .NET Framework, so make sure to check out the available options.

Clicking the Download and install this feature will automatically complete the process, and the installation will require you only to accept the process and wait for a few minutes. This applies only if the installer works.

Here are some actions you can take to identify which App is requiring the .NET Framework:

1. Open Command Prompt as an administrator.
2. Run the following command by pressing Enter: Dism /online /enable-feature /featurename:NetFX3 /All /Source:X:\sources\sxs /LimitAccess
3. Replace the X found in the Source element of the command above with the drive letter you installed Windows 10 from.
4. The process will take a few minutes to run and present you with the message, The operation was completed successfully.

One of these steps should solve your problem with .NET Framework 3.5 in Windows 10.

Also, find out how to speed up your Windows 10 device and get better performance.

If something doesn’t work for you, or you have some additional questions, please leave your comment in the section below.

Frequently Asked Questions

• How do I get .NET Framework 3.5 on Windows 10?

• Can not install .NET Framework 3.5 Windows 10?

  .NET Framework 3.5 can be installed just like any executable. You don’t even need Administrator rights in order to do so, as long as you have this dedicated tool.

• Do I have .NET Framework 3.5 installed?

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